31551230122 has 16 divisors (see below), whose sum is σ = 49422586752. Its totient is φ = 15078091600.

The previous prime is 31551230023. The next prime is 31551230231. The reversal of 31551230122 is 22103215513.

It is a super-2 number, since 2×31551230122² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203758 + ... + 323449.

It is an arithmetic number, because the mean of its divisors is an integer number (3088911672).

Almost surely, 2^31551230122 is an apocalyptic number.

31551230122 is a deficient number, since it is larger than the sum of its proper divisors (17871356630).

31551230122 is a wasteful number, since it uses less digits than its factorization.

31551230122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528533.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 31551230122 its reverse (22103215513), we get a palindrome (53654445635).

The spelling of 31551230122 in words is "thirty-one billion, five hundred fifty-one million, two hundred thirty thousand, one hundred twenty-two".